You can get different sizes of rotary cutters I use a small one for cutting small curved pieces when it’s tricky to get scissors round , especially on fine fabrics like silk, satin, lawn. Use lots of weights to stop the fabric and pattern pieces moving. Lingerie tends to have lots of small curved pieces which is tricky to cut out with huge scissors.
This would under normal circumstances be headline news
Unfortunately he will also devour cake so I have to share.....